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...Like all the four known artificial elements,† curium is unstable. Each millionth of a gram shoots out 70 billion alpha particles (helium nuclei) per minute, 3,000 times as many as the same amount of radium. This activity makes a solution of curium hydroxide glow strongly enough to take its own photograph. Its "half-life" (the period during which one half disintegrates) is only five months...

Author: /time Magazine | Title: Science: Nervous Elements | 9/29/1947 | See Source »

This week, he proudly announced that Steep Rock had shipped its one-millionth ton of ore this year. Before the close of the Great Lakes shipping season it will send out another 300,000 tons, thus becoming one of the biggest ore producers in North America. On his initial investment, Eaton already has a paper profit of more than...

Author: /time Magazine | Title: CORPORATIONS: Watery Treasure | 9/29/1947 | See Source »

...good teachers [because they] can't understand why other people make so many mistakes. . . . If I didn't remember how I felt about long division, I'd go berserk some day when I see 'there' and 'their' mixed up for the one-millionth time. . . . The most interesting thing about teaching is not what-you already know, but how much you learn and need to learn. A teacher who 'knew it all' would be nothing but a sad automaton, but I've never met one. Most...

Author: /time Magazine | Title: Education: Why Teachers Teach | 5/5/1947 | See Source »

...snowmen have not yet tried their silver iodide treatment on full-sized, outdoor clouds, but they intend to soon, with the help of the U.S. Air Forces. In the meantime they have done some figuring. The silver iodide particles need be only one-millionth of an inch in diameter. A billion billion of them will fit in an eggshell. About 200 pounds of silver iodide may be enough to seed the entire atmosphere of the U.S. at the rate of 100,000 nuclei per cubic foot. Adding one pound per hour will keep it seeded...

Author: /time Magazine | Title: Science: Snow Is Predicted | 2/17/1947 | See Source »

Mesons are subnuclear particles formed when cosmic rays from outer space hit the atmosphere. In mass, mesons are intermediate between electrons and protons. In charge, they can be either positive or negative. The positive mesons disintegrate after a millionth of a second or so, turning mostly into energy (a gamma...

Author: /time Magazine | Title: Science: Mighty Mesons | 12/2/1946 | See Source »

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